I did not start diving until WELL over my 50's. Didn't realize it was an issue (luckily). My GP questioned my desire to dive as I have (had) claustrophobic issues in my airborne life. Interestingly enough, they got better as I made communion with the underwater creatures and found a better breathing pattern while communicating with the underworld. More and more I believe my mermaid heritage is more real than previously questioned, and find myself more at home at depth (not narcosis depth, mind you, just plain water). There are times I feel more at home in the water than I do out of it. Must explore this option(?) further.